i didn't see a single sh ff fair
are those not safe or something against ike?
in fact, i didn't see a short hop at all other than the occasional rising/retreating fair/bair
more nair, it's a good move.
i liked your use of d-smash, whether that was intentional or not.
you really did good getting him off the stage, and then you just totally let him back on. when ike goes below the stage, you need to grab the ledge and counter his aether. and don't try countering side-b recovering while you're grounded on the stage. it won't work.
that dancing blade at the end there, never stop with a db3 up..., if you realize you've mis-spaced it on your opponent's shield, im pretty sure the best thing to do is just forward forward down and then stop.
well played though, your marth just keeps getting better sylarius!!